Merge pull request #7 from frtget/feature-save-exit-and-dns

Persist settings

lib/main.dart

@@ -1,15 +1,19 @@
 import 'dart:async';
 
-import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:lokinet_lib/lokinet_lib.dart';
+import 'package:lokinet_mobile/src/settings.dart';
 import 'package:lokinet_mobile/src/utils/is_dakmode.dart';
 import 'package:lokinet_mobile/src/widget/lokinet_divider.dart';
 import 'package:lokinet_mobile/src/widget/lokinet_power_button.dart';
 import 'package:lokinet_mobile/src/widget/themed_lokinet_logo.dart';
 
-void main() {
+void main() async {
+  //Load settings
+  WidgetsFlutterBinding.ensureInitialized();
+  await Settings.getInstance().initialize();
+
   runApp(LokinetApp());
 }
 
@@ -61,14 +65,17 @@ class LokinetHomePageState extends State<LokinetHomePage> {
 
     return Scaffold(
         key: key,
+        resizeToAvoidBottomInset:
+            false, //Prevents overflow when keyboard is shown
         body: Container(
             color: darkModeOn ? Colors.black : Colors.white,
             child: Column(children: [ThemedLokinetLogo(), MyForm()])));
   }
 }
 
-final exitInput = TextEditingController();
-final dnsInput = TextEditingController();
+final exitInput = TextEditingController(text: Settings.getInstance().exitNode);
+final dnsInput =
+    TextEditingController(text: Settings.getInstance().upstreamDNS);
 
 // Create a Form widget.
 class MyForm extends StatefulWidget {
@@ -110,12 +117,15 @@ class MyFormState extends State<MyForm> {
       await LokinetLib.disconnectFromLokinet();
       await _cancelTimer();
     } else {
-      final String exitNode = exitInput.value.text.trim();
-      final String upstreamDNS = dnsInput.value.text.trim();
+      //Save the exit node and upstream dns
+      final Settings settings = Settings.getInstance();
+      settings.exitNode = exitInput.value.text.trim();
+      settings.upstreamDNS = dnsInput.value.text.trim();
+
       final result = await LokinetLib.prepareConnection();
       if (result)
         LokinetLib.connectToLokinet(
-            exitNode: exitNode, upstreamDNS: upstreamDNS);
+            exitNode: settings.exitNode, upstreamDNS: settings.upstreamDNS);
       _startTimer();
     }
   }

lib/src/settings.dart

@@ -0,0 +1,38 @@
+import 'package:shared_preferences/shared_preferences.dart';
+
+class Settings {
+  static Settings _instance;
+  String _exitNode;
+  String _upstreamDNS;
+
+  Settings._();
+
+  Future<void> initialize() async {
+    SharedPreferences sharedPreferences = await SharedPreferences.getInstance();
+    this._exitNode = sharedPreferences.getString("exit-node");
+    this._upstreamDNS = sharedPreferences.getString("upstream-dns");
+  }
+
+  String get exitNode => this._exitNode;
+
+  set exitNode(String exitNode) {
+    this._exitNode = exitNode;
+    SharedPreferences.getInstance().then((sharedPreferences) =>
+        sharedPreferences.setString("exit-node", exitNode));
+  }
+
+  String get upstreamDNS => this._upstreamDNS;
+
+  set upstreamDNS(String upstreamDNS) {
+    this._upstreamDNS = upstreamDNS;
+    SharedPreferences.getInstance().then((sharedPreferences) =>
+        sharedPreferences.setString("upstream-dns", upstreamDNS));
+  }
+
+  static Settings getInstance() {
+    if (Settings._instance == null) {
+      Settings._instance = new Settings._();
+    }
+    return Settings._instance;
+  }
+}

lokinet_lib/pubspec.lock

@@ -7,49 +7,49 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.5.0-nullsafety.1"
+    version: "2.8.2"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0-nullsafety.1"
+    version: "2.1.0"
   characters:
     dependency: transitive
     description:
       name: characters
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0-nullsafety.3"
+    version: "1.2.0"
   charcode:
     dependency: transitive
     description:
       name: charcode
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0-nullsafety.1"
+    version: "1.3.1"
   clock:
     dependency: transitive
     description:
       name: clock
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0-nullsafety.1"
+    version: "1.1.0"
   collection:
     dependency: transitive
     description:
       name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.15.0-nullsafety.3"
+    version: "1.15.0"
   fake_async:
     dependency: transitive
     description:
       name: fake_async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0-nullsafety.1"
+    version: "1.2.0"
   ffi:
     dependency: transitive
     description:
@@ -87,21 +87,21 @@ packages:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.10-nullsafety.1"
+    version: "0.12.11"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0-nullsafety.3"
+    version: "1.7.0"
   path:
     dependency: transitive
     description:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.0-nullsafety.1"
+    version: "1.8.0"
   path_provider:
     dependency: "direct main"
     description:
@@ -169,56 +169,56 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.0-nullsafety.2"
+    version: "1.8.1"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.10.0-nullsafety.1"
+    version: "1.10.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0-nullsafety.1"
+    version: "2.1.0"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0-nullsafety.1"
+    version: "1.1.0"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0-nullsafety.1"
+    version: "1.2.0"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.19-nullsafety.2"
+    version: "0.4.3"
   typed_data:
     dependency: transitive
     description:
       name: typed_data
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0-nullsafety.3"
+    version: "1.3.0"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0-nullsafety.3"
+    version: "2.1.1"
   win32:
     dependency: transitive
     description:
@@ -234,5 +234,5 @@ packages:
     source: hosted
     version: "0.1.2"
 sdks:
-  dart: ">=2.10.0-110 <2.11.0"
-  flutter: ">=1.20.0 <2.0.0"
+  dart: ">=2.14.0 <3.0.0"
+  flutter: ">=1.20.0"